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We combine {\em ab initio} density functional theory (DFT) structural studies with DFT-based nonequilibrium Green function calculations to investigate how the presence of non-hexagonal rings affects electronic transport in graphitic…

Mesoscale and Nanoscale Physics · Physics 2015-02-26 Zhen Zhu , Zacharias G. Fthenakis , David Tomanek

Phosphorene is a promising single elemental two-dimensional layered semiconductor with huge potential for future nanoelectronics and spintronics applications. In this work, we investigated the effect of an organic molecule (benzene) in the…

Mesoscale and Nanoscale Physics · Physics 2019-07-09 A. Chaudhury , S. Majumder , S. J. Ray

Recent experimental advances for the fabrication of various borophene sheets introduced new structures with a wide prospect of applications. Borophene is the boron atoms analogue of graphene. Borophene exhibits various structural polymorphs…

Materials Science · Physics 2017-04-17 B Mortazavi , O Rahaman , A Dianat , T Rabczuk

We investigate the aspects of the electron transport in the zigzag graphene nanoribbons (ZGNRs) using the non-equilibrium Green's function (NEGF) formalism. The latter is an esoteric tool in mesoscopic physics and using this tool the…

Strongly Correlated Electrons · Physics 2019-06-03 Pankaj Bhalla , Surender Pratap

Moving beyond traditional 2D materials is now desirable to have switching capabilities (e.g., transistors). Here we propose using borophene because, as we will show in this letter, obtaining regions of the electronic bandstructure which act…

Materials Science · Physics 2020-12-15 Clifford M. Krowne , Xianwei Sha

Phosphorene, a 2D allotrope of phosphorus, is technologically very appealing because of its semiconducting properties and narrow band gap. Further reduction of the phosphorene dimensionality may spawn exotic properties of its electronic…

We study the interplay between long-range electron-phonon and electron-electron interactions in electrostatically doped two-dimensional semiconductors, including interlayer couplings in van der Waals heterostructures. We evaluate the…

Mesoscale and Nanoscale Physics · Physics 2026-04-03 Francesco Macheda , Thibault Sohier

Two-dimensional (2D) nanoparticle films are a new class of materials with interesting physical properties and applications ranging from nanoelectronics to sensing and photonics. The importance of conducting nanoparticle films makes the…

Materials Science · Physics 2022-04-12 Lianhua Zhang , Jian Chen , Fei Liu , Zhengyang Du , Yilun Jiang , Min Han , Guanghou Wang

Using density functional theory, we predict half-metallicity in edge hydrogenated armchair boron nitride nanoribbons (ABNNRs). The predicted spin polarization is analyzed in detail by calculating electronic and magnetic properties of these…

Quantum interference in nano-electronic devices could lead to reduced-energy computing and efficient thermoelectric energy harvesting. When devices are shrunk down to the molecular level it is still unclear to what extent electron…

Over the last decade, progress in wide bandgap, III-V materials systems based on gallium nitride (GaN) has been a major driver in the realization of high power and high frequency electronic devices. Since the highly conductive,…

Using low-resistance electrical contacts, we have measured the intrinsic high-field transport properties of metallic single-wall carbon nanotubes. Individual nanotubes appear to be able to carry currents with a density exceeding 10^9…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Zhen Yao , Charles L. Kane , Cees Dekker

In the field of DNA nanotechnology, it is common wisdom that charge transport occurs through the {\pi} stacked bases of double-stranded DNA. However, recent experimental findings by Zhuravel et. al. [Nat. Nanotech. 15, 836 (2020)] suggest…

Mesoscale and Nanoscale Physics · Physics 2024-12-31 Sourav Kundu , Siddhartha Lal

Quantum transport properties through some multilevel quantum dots sandwiched between two metallic contacts are investigated by the use of Green's function technique. Here we do parametric calculations, based on the tight-binding model, to…

Mesoscale and Nanoscale Physics · Physics 2009-11-06 Santanu K. Maiti

We report a previously unknown monolayer borophene allotrope and we call it super-B with a flat structure based on the ab initio calculations. It has good thermal, dynamical, and mechanical stability compared with many other typical…

Materials Science · Physics 2019-11-19 Zhibin Gao , Mengyang Li , Jian-Sheng Wang

We develop an electron transport theory for the hybrid system of a semiconducting carbon nanotube that encapsulates a one-atom-thick metallic wire. The theory predicts Fano resonances in electron transport through the system, whereby the…

Mesoscale and Nanoscale Physics · Physics 2016-05-10 M. F. Gelin , I. V. Bondarev

The thermal transport properties of biphenylene network (BPN), a novel sp2 -hybridized two-dimensional allotrope of carbon atoms recently realized in experiments [Fan et al., Science, 372 852-856 (2021)], are studied using the density…

Materials Science · Physics 2021-06-08 Harish P. Veeravenkata , Ankit Jain

In this work we have shown bulk superconductivity and studied the anisotropy in both the normal and superconducting states in quasi-1D conductor Nb2Se3. Electron - electron Umklapp scattering dominates electronic transport along the…

Superconductivity · Physics 2009-11-13 Rongwei Hu , K. Lauritch-Kullas , J. O Brian , V. F. Mitrovic , C. Petrovic

Electronic transport properties in armchair shaped edges graphene nanoribbons (AGNRs) doped various impurities have been simulated by the non-equilibrium Green's function approach combined with the first principle calculation based on the…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Hiroyoshi Tsuyuki , Shoichi Sakamoto , Mitsuyoshi Tomiya

Polarized light has various potential applications in the communication bands, including optical communication, polarization imaging, quantum emission, and quantum communication. However, optimizing polarization control requires continuous…

Optics · Physics 2024-03-12 Xinyang Wang , Qi Lin , Lingling Wang , Guidong Liu